Taxon Report

Lewisia cotyledon (Wats.) Rob. var. heckneri (Mort.) Munz

Heckner's lewisia

Print Report


©2010 Neal Kramer

  Classification
Scientific Name:
 Lewisia cotyledon (Wats.) Rob. var. heckneri (Mort.) Munz
Common Name:
 Heckner's lewisia
Family: Montiaceae
Element Code: PDPOR04052
USDA Plants Symbol: LECOH
Synonyms/Other Names:

Ecology and Life History
Lifeform: perennial herb
Blooming Period: (Apr)May-Jul (Apr)May-Jul
Elevation: 225-2100 (740-6890)
General Habitats: Lower montane coniferous forest
Microhabitat:
Microhabitat Details:

Conservation Status
CA Rare Plant Rank: 1B.2
Global Rank: G4T3
State Rank:
 S3
State List: None
Fed List: None
Other Status: BLM_S; SB_UCSC
CRPR Changes:

Occurrence Data from the CNDDB
Total Occurrences: 41
Element Occurrence Ranks:
   Excellent (A) 4
   Good (B) 7
   Fair (C) 2
   Poor (D) 0
   None (X) 0
   Unknown (U) 28

Location
California Endemic:  True
California Counties and Islands: Name (Code)
Humboldt (HUM), Shasta (SHA), Siskiyou (SIS), Trinity (TRI)
Quads: Name (Quad Code)
Bollibokka Mtn. (4012282), Boulder Peak (4112351), Caribou Lake (4112218), Carrville (4112216), Condrey Mtn. (4112288), Dedrick (4012371), Del Loma (4012373), Denny (4012384), Happy Camp (4112374), Hayfork Bally (4012362), Helena (4012372), Hoosimbim Mtn. (4012258), Huckleberry Mtn. (4112363), Ironside Mtn. (4012374), Jim Jam Ridge (4012383), Junction City (4012361), Mt. Hilton (4012381), Preston Peak (4112375), Rush Creek Lakes (4012278), Siligo Peak (4012288), Thompson Peak (4112311), Thurston Peaks (4012382), Weaverville (4012268), Weitchpec (4112326), Whisky Bill Peak (4112215)

Threat List Data from the CNDDB

Threat List Total: 6
EOs with Threat Listed: Total EOs % of EOs
11 27 %
Road/trail construction/maint. 5 12%
Foot traffic/trampling 2 4%
Logging 2 4%
Mining 1 2%
Other 1 2%
Recreational use (non-ORV) 1 2%

Notes
Range overlaps with other varieties; identification difficult.
Threats:
Possibly threatened by road widening and recreational activities.
Taxonomy:

Selected References

Lewisia cotyledon var. heckneri profile for potential Species of Conservation Concern evaluation (2018)
USFS Potential Species of Conservation Concern Profile
Citation California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 25 December 2024].